PowerPro is what I’ve been using for years 80#.
For leaders not joining two lines here. generally 120-150# reliable snaps, bearing swivel and welded ring. I can recommend Huskie Muskie leaders from Handlebarzfishing.com. 12 inch for casting, that or 36 inch for trolling.
Rods, can be personal preference, casting you want a heavy duty but light 8 foot or more. Trolling you can use a telephone poll. I’ve seen guys use a heavy or xtra heavy downrigging rod that doesn’t cost much but do the job.
Reels:Started with an Abu Ambassador, great real for the price and good for starting out. Still have one for trolling only (has the clicking function on the drag that alerts me when I get a pull, I can focus more on boat position and route). Casting, after time the gears will wear out in the abu from repeated retrieval of big baits. I’m a shimano reel guy: Shimano Tranx, calcuttas are ideal but $$$.